// Copyright (c) 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_FORMATS_WEBM_OPUS_PACKET_BUILDER_H_
#define MEDIA_FORMATS_WEBM_OPUS_PACKET_BUILDER_H_

#include <stdint.h>

#include <memory>
#include <vector>

#include "base/macros.h"
#include "base/memory/scoped_vector.h"

namespace media {

// From Opus RFC. See https://tools.ietf.org/html/rfc6716#page-14
enum OpusConstants {
    kNumPossibleOpusConfigs = 32,
    kMinOpusPacketFrameCount = 1,
    kMaxOpusPacketFrameCount = 48
};

class OpusPacket {
public:
    OpusPacket(uint8_t config, uint8_t frame_count, bool is_VBR);
    ~OpusPacket();

    const uint8_t* data() const;
    int size() const;
    double duration_ms() const;

private:
    std::vector<uint8_t> data_;
    double duration_ms_;

    DISALLOW_COPY_AND_ASSIGN(OpusPacket);
};

// Builds an exhaustive collection of Opus packet configurations.
ScopedVector<OpusPacket> BuildAllOpusPackets();

} // namespace media

#endif // MEDIA_FORMATS_WEBM_OPUS_PACKET_BUILDER_H_
